DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerWiring diagram
MONOCHROME DISPLAY
Wiring Diagram - Without BOSE Audio system
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Headlamp
System Diagram
System Description
Control of the headlamp system is dependent upon the position of the
combination switch (lighting and turn signal switch). When the lighting
switch is placed in the 2nd position, the BCM (body control module) receives
input requesting the headlamps and par ...
RGB digital image signal circuit
Description
Transmit the image displayed with AV control unit with RGB digital image
signal to the display unit.
Diagnosis Procedure
1.CHECK CONTINUITY RGB DIGITAL IMAGE SIGNAL CIRCUIT
Turn ignition switch OFF.
Disconnect display unit connector M151 and AV control unit
connector
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